Do you mean openings named after an european city or nation?
European Openings.

Bizarre question ;) in my blitz repertoire i have only the Italian game. In correspondence i think nothing. This is a bit strange, since most openings are named after european places.

I played the Spanish (Ruy Lopez) a lot, so I'll take that. The Sicilian of course, and the Dutch. Does Russia still count as Europe? If so I'll add the Leningrad. :P
Whenever I play the King's gambit with black I also like the Abbazia variation.

Some of my favorite openings when I'm in Europe:
Bonjour, comment vous êtes, je joue aux échecs
Hola, cómo estás, yo juego de ajedrez
Hallo, wie geht es dir, ich spiele Schach
The list goes on...

There are some openings that don't know what country they came from, eg. the Scandinavian Portuguese or the Leningrad Dutch.

Aren't most of the openings of European origin?
Cambridge Springs and Wilkes-Barre are cities in Pennsylvania I believe.

I say most, but not all. The Wilkes-Barre did come to my mind as well, but it is also known as the Traxler which is Czech-origin yes?
Post your favourite European openings.